I was wondering if a suitably adjusted 9MM die can be used to seat bullets in 380 cartridges?
Jim

Tried it, it does not work. 9mm is a different case and the 380 is too short for a crimp. The sizer does not work either.

David

That said, for seating ONlY you should be fine with a 9mm die as long as you can screw it in far enough to get the OAL you want.

I have accidentally gotten a .380 case into a loading session of 9mm, and I did load the.380 case successfully, including seating the bullet TO 9MM DEPTH.

Did not try to chamber or fire it in a .380, since it was oversized and overloaded to 9mm pressure.

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Science plus Art

Its the crimp. Case is too short to get a good crimp.

David

I did some looking around and have noticed that Lee offers a seating die that purportedly will work with 9mm,380 38Super etc. Does anyone have any experience with this?
Jim

You're assuming he wants to Seat & Crimp in one step.

You ate correct. I tried using 9mm dues to load 380. It was a total failure. I got 380 dies.

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Check out the case taper.